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What is the hose connected to the engine block behind the alternator on a 1998 Chevy Tahoe LT 350 Vortec engine?


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2015-07-17 17:55:49
2015-07-17 17:55:49

Chevy Tahoe Heater Return Pipe Hey GMMerlin, I have a leak coming from that threaded fitting for the heater hose. Can this be fixed simply by retightening the fitting or do I need to buy a new one?

You will have to replace it...most likely when you touch it, it will break and leave the threaded part in the intake.. Its a PIA to remove the broken off portion, but you don't have to take the manifold off to do it.

Go to for a new tool to remove the broken part.

if it breaks off you can get the threads out with a small punch and then use wet dry vac. to remove small parts in hole. you can just buy the threaded part and use hose clamp to connect after you cut off the end of hose that is crimped it has a small lock ring that will also go bad or crack not a great design by chev. do it yourself in 10 min or so


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It is mounted on the engine and connected to the battery.

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The alternator is run by a belt connected to the engine. When the engine is running the alternator is turning. The alternator is what produces the electrical current that charges the battery & powers everything electrical while the engine is running. the battery is mainly to start the engine.

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The alternator is connected to the front of the engine. It is on the upper left corner, driven by the serpentine belt.

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Usually found behind/under the glove box or behind the kick panel.

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Below the intake behind the alternator.

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